Have your kids circle the shapes that'll form the rectangle on the left. It'll test their knowledge of shapes and ability to put them together to make a new one. Ask them to look at the parts on the right and circle the ones that'll form the rectangle.
Tug of war is a great game to teach your child simple math. Explain the commutative property--it states that the product remains the same regardless of the order of factors. Use the equations in the middle of the worksheet and have your child draw a line to the corresponding equation. It's a fun and easy way to learn math.